Clock-switch.



H. J. TREGANZA.

CLOCK SWITCH.

APPLIOATION FILED JUNE 17,1913.

1,088,381, Patented Feb. 24, 19m

UNITED STATES PATENT OFFICE.

HOWARD I. TREGANZA, 0F NE W YORK, N. Y., ASSIGNOB TO THE ANSONIA CLOCKCOIPANY, OF NEW YORK, N. Y., A COBPOBATIONIIF CONNECTICUT.

CLOCK-SWITCH.

Specification of Letters Patent.

Patented Feb. 24, 1914.

1' '0 all whom it may concern Be it known that I, HOWARD J. TREcANzA, acitizen of the United States, and resident of the borough of Brooklyn,in the city and State of New York, have invented a new and usefulImprovement in Clock-Switches, of which the following is aspecification.

My invention relates to an improvement in clock switches arranged topermit, prevent and advance the striking of the alarm bell, the switchbeing mounted on the clock case and projecting through and incommunication with the alarm bell mechanism.

The object of this invention is to provide a clock switch which will,when tripped to stop the ringing of the alarm bell, automatically permitthe alarm mechanism to again ring at the previously determined hour.

A further object is to provide a switch of the above character whichwill be novel in construction and operation; which will be very simpleand inexpensive to manufacture; and which will be mounted on the caseand only be operated to accomplish the desired result at the time setfor the alarm to l his device is to be used in alarm clocks known aseight day alarm and twenty-four hour alarm clocks.

A practical embodiment of my invention is represented in theaccompanying drawings, in which Figure 1 represents in detail a frontelevation of an alarm clock with my invention applied thereto, a portionof the face and case being broken away to disclose a part of the alarmbell ringing mechanism, Fig, 2 represents a detail central section throuthe switch and the alarm bell ringing mec anism when in operation, Fig.3 represents a section taken in the planes of the line AA of Fig. 1, theparts shown in their position corresponding to that shown in Fig. 2,Fig. 4 represents a detail central section, the bell ringing mechanismshown tripped by the switch and the switch shown in the operatingposition in dotted lines, Fig. 5 represents a central section taken inthe same planes as Fig. 3 with the parts shown in their positioncorresponding to that shown in Fig. 1, and Fig. 6 is a detail viewshowing the hammer tail held against movement by the nose on the springreleasing arm.

The clock case is denoted by 1, its frame gy 2, its hell by 3 and itsalarm hammer The clock movement itself may be of any approvedconstruction and 'ivill not, therefore, be illustrated or describedfurther than called for by the immediate purposes of this presentdescription.

The hammer 4 projects through an openmg 5 in the case 1 and is operatedto strike the bell by the usual mechanism.

The means for releasing the bell striking mechanism comprises the wellknown rotating cam 6 with its notch 6*, the alarm setting toe 7 thespring releasing arm 8 with its nose 8* and the hammer tail 9, all ofwhich are of the usual form and arrangement and operated in the usualmanner.

My invention consists in setting or looking the above mentionedmechanism so that it cannot operate again until twenty-four hours haveelapsed or until a complete cycle of the rotating cam 6 has been made.To accomplish this result I mount, between the plates 10 and 11 of theframe 2 an arbor 12 provided with extended journals 13, 14:, whichpermit the arbor to slide laterally in its bearings. The arbor 12 isalso provided with an arm 15 bent to form a hook 15* which engages ahole 16 in the plate 10, and an upwardly extended bent arm 17. A-plunger18, mounted in a bearing 19, is screwed or otherwise secured to the case1 and projects downwardly into the case so as to engage the bent arm 17.A'spring 20 is housed in the bearing 19 and around the plunger 18 andserves to keep the plunger normally out of contact with the arm 17. Aspring 21 is wound around the arbor 12, one end of which is secured toone of the posts 22 which spaces the plates 10 and 11, and the oppositeend engaging the arm 17 tending to lift the arm. This spring 21 is woundaround the arbor so that there will be a torsional as well as alongitudinal strain imparted to the arbor which will tend to force thearbor 12 toward the front plate 10 as well as lift the arms 15 and 17.The forcing of the arbor toward the front plate causes the extendedjournal 13 to project through the plate 10 and engage the sprin arm 8.To limit the upward movementof t e arms 15 and 17, I provide a stop pin23 fixed to the plate 10 and in position to engage the arm 15.

In operation, to set the alarm bell ringing the earn 6 is rotated to aposition, as shown in Figs. 2 and 3, the spring releasing arm 8 havingforced the arbor 12 wlth 1ts arms 15 and 17 toward the back plate bpressing on the journal 13, compressing te spring 21' and releasing thehook 15* from its hole 16 in the front plate; the spring at the sametime lifting the arm 15 and hook 15* out of alinement with the hole.

When the notch 6* in the cam 6 reaches the toe 7 it will be forcedoutwardly by the spring releasing arm 8 which will draw the nose 8* fromthe hammer tail 9 thereby setting the alarm mechanism in motion.

The mechanism for setting the alarm bell ringing thus far explained isof a well known type and not claimed in this invention but I will nowproceed to describe the means employed for switching the alarm off andpermitting the resetting of the alarm to again ring at a previouslydetermined hour. While the alarm hammer is still vibrating, the plungeris forced down until it engages the bent arm 17 which will, in thefurther movement of the plunger, rock the arbor 12 and cause the arm 15and hook 15* to come in contact with the hammer tail 9 and immediatelystop the ringing of the bell. The hook 15* in its course downward, whilein contact with the hammer tail 9 will come into register with its hole16, and be forced thereinto by the spring 21; thereby locking the alarmbell ringing mechanism until the spring releasing arm 8 again forces thearbor back and the hook 15* out of the hole 16 in the front plate.

The plunger, when released by the operator, will return to its normalposition and the parts remain in the position as shown in Figs. 42 and5, until again released by the cam toe and spring arm in its cycle ofoperation.

It will be understood that while I have shown and described a mechanismwhereby the alarm will ring every twenty-four hours, it is evident thatit maybe arranged to ring at any predetermined interval.

lVhat I claim is 1. In an alarm clock, a case, a frame secured thereto,an alarm bell ringing mechanism carried by the frame, means slidablymounted in said frame and adapted to engage said bell ringing mcchanismfor stopping the alarm mechanism and resetting it to again ring at apreviously determined time, and a spring actuated plunger secured to thecase in position to operate said means when the alarm is liberated.

Q. In an alarm clock, a case, a frame secured thereto, an alarm bellringing mechanism carried by the frame, a laterally slidable arbormounted in said frame and provided with an arm adapted to engage thealarm mechanism to stop said mechanism and reset it to again ring atapreviously determined time and a spring-actuated plunger secured to thecase in position to rock said arbor when the alarm is liberated.

3. In an alarm clock, a case, a frame provided with a hole therein, analarm bell ringing mechanism carried by the frame, an arbor slidablymounted in said frame and provided with an arm adapted to engage saidhole in the frame and the alarm mechanism to stop said mechanism andreset it to again ring at a previously determined time, and a springactuated plunger secured to the case in position to rock the said arborwhen the alarm is liberated.

4. In an alarm clock, a case, a frame provided with a hole therein, analarm bell ringing mechanism carried by the frame, a spring-actuatedarbor mounted in said frame and provided with an arm adapted to engagesaid hole in the frame and the alarm mechanism to stop the saidmechanism to reset it to again ring at a previously determined time, anda spring-actuated plunger secured 'to the case in position to rock thesaid arbor when the alarm is liberated.

5. In an alarm clock, a case, a frame provided with a hole therein, analarm bell ringing mechanism carried by the frame, a spring-pressedplunger secured to said case, a spring-actuated arbor slidably mountedin said frame and provided with a pair of arms, one arm in position tobe rocked by the spring plunger and the other arm adapted to engage saidhole in the frame and the alarm mechanism to stop the said mechanism andreset it to again ring at a previously determined time.

6. In an alarm clock, a case, a frame provided with a hole therein, analarm bell ringing mechanism carried by the frame, a spring-pressedplunger secured to the case, a spring-actuated arbor having journalsslidably mounted in and extending beyond the frame, one journal inposition to be engaged by the said alarm mechanism, said arbor providedwith a pair of arms, one arm in position to be rocked by the plunger,the other arm adapted to engage said hole in the frame and the alarmmechanism to stop the said mechanism and reset it to again ring at apreviously determined time, and a stop pin fixed in the frame to arrestthe upward movement of the arbor.

In testimony, that I claim the foregoing as my invention, I have signedmy name in presence of two witnesses, this sixteenth day of June, 1913.

HOIVARD J. TREGANZA. \Vitncsses:

JosEPir Sonwnrznn,

PNIIIN G. KEALE.

